<template>
  <div class="login_container">
        <div class="login_box">
            <!-- 头像区 -->
            <div class="avatar_box">
                <img src="../assets/avatar.jpg" alt="">
            </div>
             <!-- 登录表单区 -->
            <el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules" class="login_form" label-width="0px">
                <!-- 用户名 -->
                <el-form-item prop="username">
                    <el-input v-model="loginForm.username" prefix-icon="el-icon-user"></el-input>
                </el-form-item>
                <!-- 密码 -->
                <el-form-item prop="password">
                    <el-input v-model="loginForm.password" prefix-icon="el-icon-edit" type="password"></el-input>
                </el-form-item>
                <!-- 按钮 -->
                 <el-form-item class="btns">
                      <el-button type="primary" @click="login">登录</el-button>
                      <el-button type="info" @click="resetLoginFrom">重置</el-button>
                </el-form-item>
            </el-form>
        </div>
  </div>
</template>

<script>
export default {
  data () {
    return {
      // 这是登录表单的数据绑定对象
      loginForm: {
        username: '',
        password: ''
      },
      // 表单验证规则
      loginFormRules: {
        // 验证用户名是否合法
        username: [
          { required: true, message: '请输入登录名称', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在3到10个字符', trigger: 'blur' }
        ],
        // 验证密码是否合法
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在6到15个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    // 重置表单
    resetLoginFrom () {
    //   console.log(this)
      this.$refs.loginFormRef.resetFields()
    },
    login () {
      this.$refs.loginFormRef.validate(async (value) => {
        if (!value) return
        const { data: res } = await this.$http.post('login', this.loginForm)
        if (res.meta.status !== 200) return this.$message.error('登录失败，等检查账号密码')
        this.$message.success('登录成功')
        // 登录成功跳转到后台页面
        console.log(res)
        window.sessionStorage.setItem('token', res.data.token)
        // 跳转
        this.$router.push('/home')
      })
    }
  }
}
</script>

<style lang="less" scoped>
.login_container{
    background: #2b4b6b;
    height: 100%;
}
.login_box{
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
    padding: 10px;
    .avatar_box{
        height: 130px;
        width: 130px;
        border: 1px solid #eee;
        border-radius: 50%;
        padding: 10px;
        background-color: #fff;
        box-shadow: 0 0 10px #ddd;
        position: absolute;
        left: 50%;
        transform: translate(-50%,-50%);
        img{
            width: 100%;
            height: 100%;
            border-radius: 50%;
        }
    }
}
.btns{
    display: flex;
    justify-content: flex-end;
}
.login_form{
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
}
</style>
